Up and Running with Craft 3

This course covers the basics you need to know to get started using Craft 3 for your website. Learn how to install Craft, how to configure a site in the Control Panel, best practices for templates, the basics of using Twig, and how to use special fields like Matrix, Categories, and Entries. It's the getting started guide you need!
https://craftquest.io/courses/craft-cms-3-tutorials

The ExpressionEngine 2 Client Guide

Responsive CP

Responsive CP is a custom ExpressionEngine theme that makes your control panel work better with mobile devices as well as look more professional. It also allows you to easily add your logo to the bottom of the control panel (good for branding client sites).
http://www.putyourlightson.net/responsive-cp